Author: Robert Hyatt
Date: 08:19:19 09/17/03
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On September 16, 2003 at 14:38:21, Tord Romstad wrote: >On September 16, 2003 at 13:32:09, Robert Hyatt wrote: > >>On September 16, 2003 at 12:50:10, Tord Romstad wrote: >> >>>On September 16, 2003 at 10:58:15, Robert Hyatt wrote: >>> >>>>Actually Crafty won't ever reach such a position. It won't allow the pawns >>>>to get that jammed up in the first place. :) >>> >>>How do you achieve this? I don't see how it is even possible without >>>using an asymmetrical eval ... >>> >>>Tord >> >> >>I use an asymmetrical eval. :) > >OK! > >I thought I remembered that you were a strong symmetrical eval advocate, >but clearly my recollection was wrong. > >Do you use asymmetrical eval in all games, or only against humans? > >Tord The amount of asymmetry is very small in crafty. Mainly dealing with blocked pawns and king safety. I leave it on in all games, although against certain humans I ramp up the asymmetry for blocked positions as all they want to do is draw.
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